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Beach nourishment - designing alternatives to models
Engineering models are employed to help determine the most appropriate form
of nourishment. However experience form the USA suggests that practical experience
may be equally, if not more valid. In this context three means of developing
beach nourishment schemes have been identified, providing ways of assessing
proposals, which do not rely on models:
- Imitate nature: observe shoreface behaviour over some time span and assume
similar post-replenishment behaviour of the artificial beach;
- Kamakaze beach: Emplace the beach and see what happens. Take advantage of
lessons learned from careful monitoring of the emplacement to help the design
of succeeding replenishments;
- Learn from the past: Research the fate of previous replenishment projects
(or similar, nearby projects) and assume similar behaviour of the new beach
(Pilkey et al. 1994).
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Further guidance: A detailed review has been prepared by CIRIA
and published in their Beach Management Manual (CIRIA
1996). This report emulates design approach 3 and provides some
necessary background information.
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References
CIRIA
1996.
Beach Management Manual.
CIRIA Reports, 153
Construction Industry Research and Information Association.
Pilkey, O.H., Young, R.S., Bush, D.M. & Thieler, E.R.
1994.
Predicting the behaviour of beaches: alternatives to models.
In: Littoral 94, Proceedings of a Multi-Disciplinary Symposium on Coastal Zone Research-Management and P, ed.de Carvalho, S. & Gomes, V.Eurocoast, Portugal, 53-60.
Abstract...
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